The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 20, 2007
Filed:
Jul. 18, 2005
Akira Hamada, Legal Representative, Hyogo, JP;
Yoshiko Hamada, Legal Representative, Hyogo, JP;
Takenobu Kimura, Hachioji, JP;
Yotaro Sato, Hachioji, JP;
Akira Hamada, legal representative, Hyogo, JP;
Yoshiko Hamada, legal representative, Hyogo, JP;
Takenobu Kimura, Hachioji, JP;
Yotaro Sato, Hachioji, JP;
Abstract
A color image forming apparatus includes primary transferring units that transfer toner images of different colors from photoreceptors to an intermediate transfer body, a secondary transferring unit that transfers a color toner image from the intermediate transfer body onto a transfer material, a pre-charging unit placed downstream of the primary transferring units and upstream of the secondary transferring unit and that applies electric charge to the color toner image on the intermediate transfer body before the secondary image transfer with the polarity of the applied electrical charge identical to polarity of the potential of the toner, and a potential adjustment unit placed downstream of the pre-charging unit and upstream of the secondary transferring unit, and that applies an electric charge that has a polarity opposite to that of the potential of the toner to the color toner image on the intermediate transfer body.